Jump to content
David Humphries

Chalara fraxinea - Generic thread

Recommended Posts

My conclusion here EdwardC, spec savers syndrome, if you ain't looking for it, doesn't mean it's not there. Not notice much here on Rail, and frankly could be a lot of strimmer damage ? Ash is a fragile tree, don't like reductions, big platter of fungal interest in it and not a long lived tree anyway. Genuine Chalara IS a problem in plantation, or avenues but like Massaria, I ain't seeing much of it. K

Edited by Khriss
Should have gone to SpecSavers !

Share this post


Link to post
Share on other sites

How many of these trees that are recovering, are coming back from drought induced stress and not Chalara?

  • Like 2

Share this post


Link to post
Share on other sites
Wondered if someone with more experience than me can help. We look after a lake and the owner has told us his stand of Ash and Cherry has signs of Ash die back. After inspecting the trees,  the majority have no sign at all of any ailments. Among the 50 or so Ash trees, only one has any sign of anything like Chalara. 
We are in south Wiltshire which I think has little incidence of Chalara so far. 
The crowns are fine, looking healthy and totally normal.
The following photos show the crowns, the trunks typical of all the trees, then finally the one suspect tree. 
Is the last pic a clear sign of Chalara?
144F7022-BB05-4564-BD7A-48C9C19748AC.thumb.jpeg.5dd709052eee5abc6c7d41f6df0abf22.jpeg
D2BD3D83-BBD6-46B8-AA7C-4CF009C49B09.thumb.jpeg.cff52d56fbc8554304866182779d2491.jpeg
37C5D61A-5545-4016-B61A-BA5F75FC704E.thumb.jpeg.5effe114235265929d217f39ddda61f3.jpeg

Where are you in South Wilts. I’m on the wilts/Dorset border and it’s looking terrible around here.

Share this post


Link to post
Share on other sites
On 15/08/2019 at 21:45, Arbre said:

Wondered if someone with more experience than me can help. We look after a lake and the owner has told us his stand of Ash and Cherry has signs of Ash die back. After inspecting the trees,  the majority have no sign at all of any ailments. Among the 50 or so Ash trees, only one has any sign of anything like Chalara. 

We are in south Wiltshire which I think has little incidence of Chalara so far. 

The crowns are fine, looking healthy and totally normal.

The following photos show the crowns, the trunks typical of all the trees, then finally the one suspect tree. 

Is the last pic a clear sign of Chalara?

144F7022-BB05-4564-BD7A-48C9C19748AC.jpeg

D2BD3D83-BBD6-46B8-AA7C-4CF009C49B09.jpeg

37C5D61A-5545-4016-B61A-BA5F75FC704E.jpeg

Just a point ..The Cherry won't have Ash die back ..🙂

  • Haha 1

Share this post


Link to post
Share on other sites
On ‎22‎/‎06‎/‎2019 at 13:47, EdwardC said:

 

 

 

 

On an even gloomier note, Chalara does infect, and has been found on, other members of the Oleaceae family. On a more positive note, it doesn't appear to infect olives.

I did not know this. Out of genus list I recognise,  I see Lilac, Privet, Jasmin, Osmanthus, Phillyrea and Forsythia.

Worth looking out for symptoms on these shrubs too.

 

Share this post


Link to post
Share on other sites
14 hours ago, Pete Mctree said:

How many of these trees that are recovering, are coming back from drought induced stress and not Chalara?

Last year we had a long hot summer in the South East, It was the first hot summer that lasted any length of time in years, 2018 had hot spells here but it is normal in Summer, before that 76,  as there been extensive annual droughts in other parts of the country that I am unaware of recently?

The Ash I took down recently was mixed with a Beech crop, Beech tends to suffer more from drought conditions than Ash, the Beech is fine , the Ash is f**ked, it’s been declining on this site for years and certainly isn’t coming back.

Edited by The avantgardener

Share this post


Link to post
Share on other sites
1 hour ago, The avantgardener said:

the Ash is f**ked, it’s been declining on this site for years and certainly isn’t coming back

Chalara has been shown to have been present in the UK since at least 2004, eight years before a nursery admitted it had imported infected trees.

 

Chalara is present throughout the UK which isn't surprising. It appears that Chalara exists in the ash population at a low level for a number of years with little evidence of symptoms. There seems to come a point when the level of innoculum reaches a critical level, at which time it really takes off and symptoms become blindingly obvious. That point in time here, was this year. In other areas it was some time ago. In other areas it may yet be to happen, but it will.

 

I'm sceptical about ash making a comeback. It hasn't been reported elsewhere in Europe that I'm aware of.

  • Like 2

Share this post


Link to post
Share on other sites

I looked up about ADB in Europe to see if there has been any success in growing seedlings from the "resistant " trees and it seems success is very limited ...

 

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Featured Adverts

About

Arbtalk.co.uk is a hub for the arboriculture industry in the UK.  
If you're just starting out and you need business, equipment, tech or training support you're in the right place.  If you've done it, made it, got a van load of oily t-shirts and have decided to give something back by sharing your knowledge or wisdom,  then you're welcome too.
If you would like to contribute to making this industry more effective and safe then welcome.
Just like a living tree, it'll always be a work in progress.
Please have a look around, sign up, share and contribute the best you have.

See you inside.

The Arbtalk Team

Follow us

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.